CN202393721U - Thermal deformation tester for cement-emulsified asphalt mortar material - Google Patents
Thermal deformation tester for cement-emulsified asphalt mortar material Download PDFInfo
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- CN202393721U CN202393721U CN2011205017814U CN201120501781U CN202393721U CN 202393721 U CN202393721 U CN 202393721U CN 2011205017814 U CN2011205017814 U CN 2011205017814U CN 201120501781 U CN201120501781 U CN 201120501781U CN 202393721 U CN202393721 U CN 202393721U
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- emulsified asphalt
- asphalt mortar
- temperature chamber
- temperature
- cement
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Abstract
The utility model discloses a thermal deformation tester capable of testing large-size cement-emulsified asphalt mortar material. The thermal deformation tester capable of testing large-size cement-emulsified asphalt mortar material comprises a fixed support, wherein the fixed support is provided with a liquid circulating temperature chamber and a displacement sensor; a test piece is arranged in the thermal insulation cavity of the liquid circulating temperature chamber; the test piece and the displacement sensor are connected by an ejector rod installed on the fixed bracket; and the test piece is provided with a temperature sensor. Aiming at the characteristics that the cement-emulsified asphalt mortar is heterogeneous material, the large-size test piece can be tested, and the accuracy and the representativeness of the test result can be guaranteed. The bracket of the large-size test piece is matched with quartz glass ejector rods of different lengths, which is favorable for deeply researching the service behavior of the cement-emulsified asphalt mortar and the cracking mechanism of a plate-type rail structure filling layer.
Description
Affiliated technical field
The utility model patent relates to a kind of cement emulsified asphalt mortar materials hot deformation tester.
Background technology
Cement emulsified asphalt mortar is the key project material that plate track of high speed railway structure filling bed adopts.The cement emulsified asphalt mortar filling bed mainly plays the effect of construction adjustment, support, buffering and compatible deformation.In the process, the cement emulsified asphalt mortar filling bed bears the effect of seasonality and temperature difference per day variation, thereby the hot deformation behavior of cement emulsified asphalt mortar directly influences the compatibility of deformation effect and the supporting role of filling bed under arms.
At present, the body of heater of existing thermal dilatometer adopts electrical heating.Up-down temperature speed is fast in order to satisfy, the requirement of test specimen uniformity of temperature profile, and therefore institute's sample dimensions of test is little, and general length is 25mm, diameter 5mm, and adopt the furnace chamber temperature to be similar to replacement test specimen temperature usually.But because cement emulsified asphalt mortar belongs to macroscopical heterogeneous material; The particle diameter of the key component material sand in the mortar is the millimeter level; According to the regulation of " the provisional technical conditions of passenger dedicated railway line CRTS I type plate type unballasted track cement emulsified bitumen mortar " (No. [2008] 74, science and technology base), the maximum particle diameter of sand can reach 118mm.If adopt the hot deformation behavior of conventional thermal expansivity testing tool test cement emulsified asphalt mortar, can cause test result discrete big, representative poor because sample dimensions is little, and the specimen molding difficulty.It is thus clear that general thermal expansion instrument is not suitable for testing parameters such as cement emulsified asphalt mortar material coefficient of thermal expansion coefficient.
The utility model content
In order to overcome the uncomfortable deficiency that should test the cement emulsified asphalt mortar thermal deformation behavior of existing thermal expansion instrument, the utility model provides a kind of cement emulsified asphalt mortar thermal-deformation detection apparatus that can accurately test the thermal deformation behavior of large scale, heterogeneous material.
A kind of cement emulsified asphalt mortar materials hot deformation tester; Comprise fixed support; Liquid circulating temperature chamber and displacement transducer are installed on the said fixed support; Be provided with test specimen in the insulation cavity of said liquid circulating temperature chamber, said test specimen is connected through the push rod that is installed on the said fixed support with said displacement transducer, on the said test specimen temperature sensor is installed.
In the utility model; Said liquid circulating temperature chamber comprises temperature chamber outer wall, temperature chamber inwall, diaphragm, import and outlet; Said temperature chamber outer wall and temperature chamber inwall are formed the hermetic cavity body, and said cavity is provided with import and the outlet that is in communication with the outside, and are provided with diaphragm in the said cavity and are communicated with import and outlet; The inboard formation insulation of said temperature chamber inwall cavity, said temperature chamber outer exterior wall is enclosed with heat-insulation layer.
In the utility model, be provided with sample stent in the said insulation cavity.
In the utility model, said temperature sensor adopts embedded mode or pre-buried mode to be arranged in the test specimen.
In the utility model, said sample stent and said push rod all adopt the material of low thermal coefficient of expansion.
In the utility model, said sample stent and said push rod adopting quartz glass are made.
In the utility model, said heat-insulation layer adopts polyurethane insulation coating.
In the utility model, said displacement transducer is connected with data acquisition module with temperature sensor.
Adopt characteristics and the slurry placement layer actual Service Environment temperature conditions of this device of technique scheme based on the cement emulsified asphalt mortar composition material; Temperature chamber adopts liquid round-robin mode to satisfy the required temperature conditions of test, has guaranteed the homogeneity of large scale test specimen Temperature Distribution; Adopt embedded or flush type temperature sensor laying method, eliminate sample dimensions increase back furnace chamber temperature and test specimen temperature and have the error that causes than big-difference.Adopt the large scale test specimen, the test specimen length that can test is 50-100mm, and the maximum cross-section reaches 20mm * 20mm, is satisfying the accuracy requirement that has reduced under the prerequisite of measurement sensitivity displacement transducer; Adopt the quartz holder and the push rod of low thermal coefficient of expansion, and proofread and correct, guaranteed the precision of test, eliminate the influence of variation of ambient temperature test result through actual measurement test specimen length and real time temperature.
In sum, the utility model is the characteristics of heterogeneous material to cement emulsified asphalt mortar, can test large-sized test specimen, warranty test result's accuracy, representativeness.Large-sized sample stent cooperates the quartz glass push rod of different length, is beneficial to the in-depth research of cement emulsified asphalt mortar military service behavior and slab track structure filling bed cracking mechanism.
Description of drawings
Fig. 1 is a temperature chamber longitudinal profile structural map;
Fig. 2 is the one-piece construction synoptic diagram of this device;
Fig. 3 is that A place temperature sensor is put figure among Fig. 2;
In the accompanying drawing, 1. heat-insulation layer, 2. temperature chamber outer wall, 3. diaphragm, 4. temperature chamber inwall, 5. sample stent, 6. displacement transducer, 7. quartz glass support, 8. push rod, 9. test specimen, 10. temperature sensor, 11. heatshield materials, 12. temperature chambers, 13. fixed supports.
Embodiment
Below in conjunction with accompanying drawing and embodiment this patent is further specified.
The cement emulsified asphalt mortar thermal deformation test assembling device that the utility model provides is made up of with the high cryostat, external circulating system of jacking gear, temperature chamber 12, temperature sensor 10, displacement transducer 6, data acquisition module and Controllable Temperature sample stent 5, push rod 8, fixed support 13.
Said sample stent 5 and push rod 8 adopting quartz glass, push rod 8 passes fixed support 13 end faces and contacts with test specimen 9, and the distortion of test specimen 9 is passed to displacement transducer 6.Said fixed support 13 suspensions make fixed support 13 vertically to descend to get into or rise and withdraw from temperature chamber 12 on the electric up-down slide bar.Displacement transducer 6 is fixed on the fixed support 13.
Said temperature chamber 12 end faces are opening, supply sample stent 5 turnover.Temperature chamber 12 is established liquid-inlet and outlet, is connected with high cryostat, external circulating system, provides test required temperature environment.The test temperature scope is-40 ℃ ± 90 ℃.Control system through high cryostat, external circulating system can realize deformation test under intensification, cooling, heating and cooling circulation, the steady temperature.Said temperature sensor 10 is arranged in the inside of test specimen 9 when test specimen 9 moulding; Or when test at the about 5-10mm of test specimen surface depth of cut; The groove of width 3mm places temperature sensor 10 in the groove that is cut, and carries out overlay masking with heatshield materials such as plasticine or flexible cellular plastic 11.When temperature sensor 10 is arranged in test specimen inside when specimen molding, need demarcate to pre-buried temperature sensor 10.
In Fig. 1; From temperature range is that-40 ℃ ± 90 ℃ the import of circulating fluid through the temperature chamber bottom gets in the chamber that is formed by temperature chamber outer wall 2 and temperature chamber inwall 4; Circulation fluid gets into closed cavity top from the perforate of diaphragm 3 again; Flow out from the outlet of temperature chamber then, thus the homogeneity of assurance temperature indoor temperature.The copper ring suit that said temperature chamber by two different-diameters, highly is 170mm is formed temperature chamber outer wall 2 and temperature chamber inwall 4; By copper bottom surface and end face the top and bottom of two copper rings are sealed again and constituted; Interior ring internal diameter is 45mm, and the outer shroud external diameter is 90mm, and bottom surface and end face diameter are 90mm.The temperature chamber end face is opened the circular hole that diameter is 45mm, supplies sample stent vertically to pass in and out, and the outerwrap polyurethane foam heat insulation material reduces the heat interchange of temperature chamber and environment.
In Fig. 2, said temperature chamber 12 is wrapped with quartz glass support 7, and it is 30mm * 30mm, the high 150mm of being that described quartz glass support 7 is square shape, end face and bed-plate dimension by four pieces of quartz glass fusion weld.The hole that a diameter is 8mm is opened in the cradle top surface center.Push rod 8 is the quartz glass bar of diameter 6mm; Quartz glass support 7 is connected with the support jacking gear through bolt; Displacement transducer 6 is connected with quartz glass push rod 8; The distortion that test specimen 9 produces passes to displacement transducer 6 through quartz glass push rod 8, thereby at utmost eliminates the influence of variation of ambient temperature to test result.In Fig. 3, temperature sensor 10 places in the test specimen pre-cut groove to be measured, seals with heatshield material 11 then, thereby avoids the influence of temperature indoor air temperature and obtain the true temperature of test specimen itself.
The signal of gathering from displacement transducer 6 and temperature sensor 10 is handled through the data acquisition module in the computing machine and is obtained temperature-deformation curve and temperature-expansivity curve.
Claims (8)
1. cement emulsified asphalt mortar materials hot deformation tester; Comprise fixed support; It is characterized in that: liquid circulating temperature chamber and displacement transducer are installed on the said fixed support; Be provided with test specimen in the insulation cavity of said liquid circulating temperature chamber, said test specimen is connected through the push rod that is installed on the said fixed support with said displacement transducer, on the said test specimen temperature sensor is installed.
2. cement emulsified asphalt mortar materials hot deformation tester according to claim 1; It is characterized in that: said liquid circulating temperature chamber comprises temperature chamber outer wall, temperature chamber inwall, diaphragm, import and outlet; Said temperature chamber outer wall and temperature chamber inwall are formed the hermetic cavity body; Said cavity is provided with import and the outlet that is communicated with the high cryostat, external circulating system of Controllable Temperature; Be provided with diaphragm in the said cavity and be communicated with import and outlet, the inboard formation insulation of said temperature chamber inwall cavity, said temperature chamber outer exterior wall is enclosed with heat-insulation layer.
3. cement emulsified asphalt mortar materials hot deformation tester according to claim 2 is characterized in that: be provided with sample stent in the said insulation cavity.
4. cement emulsified asphalt mortar materials hot deformation tester according to claim 3 is characterized in that: said temperature sensor adopts embedded mode or pre-buried mode to be arranged in the test specimen.
5. cement emulsified asphalt mortar materials hot deformation tester according to claim 4 is characterized in that: said sample stent and said push rod all adopt the material of low thermal coefficient of expansion.
6. cement emulsified asphalt mortar materials hot deformation tester according to claim 5 is characterized in that: said sample stent and said push rod adopting quartz glass are made.
7. cement emulsified asphalt mortar materials hot deformation tester according to claim 2 is characterized in that: said heat-insulation layer adopts polyurethane insulation coating.
8. cement emulsified asphalt mortar materials hot deformation tester according to claim 1 is characterized in that: said displacement transducer is connected with data acquisition module with temperature sensor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011205017814U CN202393721U (en) | 2011-12-06 | 2011-12-06 | Thermal deformation tester for cement-emulsified asphalt mortar material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011205017814U CN202393721U (en) | 2011-12-06 | 2011-12-06 | Thermal deformation tester for cement-emulsified asphalt mortar material |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202393721U true CN202393721U (en) | 2012-08-22 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011205017814U Expired - Fee Related CN202393721U (en) | 2011-12-06 | 2011-12-06 | Thermal deformation tester for cement-emulsified asphalt mortar material |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102419341A (en) * | 2011-12-06 | 2012-04-18 | 中南大学 | Thermal deformation tester for cement-emulsified asphalt mortar material |
| CN103063699A (en) * | 2012-12-13 | 2013-04-24 | 中国科学院理化技术研究所 | Material low-temperature thermal expansion coefficient testing device using refrigerator as cold source |
| CN103439355A (en) * | 2013-08-29 | 2013-12-11 | 南京理工大学 | Tester for coefficient of linear thermal expansion of embedded material |
| CN103994707A (en) * | 2014-05-09 | 2014-08-20 | 青岛德固特节能装备股份有限公司 | Method for measuring relative thermal expansion elongation amount of air preheater heat exchange tube |
| CN107063169A (en) * | 2017-06-16 | 2017-08-18 | 哈尔滨工业大学 | A kind of method of size changing amount under the conditions of quantitative assessment metal material cold cycling |
| CN109187620A (en) * | 2018-09-19 | 2019-01-11 | 江门市建联检测有限公司 | A kind of plastic tube vicat softening temperature testing equipment |
-
2011
- 2011-12-06 CN CN2011205017814U patent/CN202393721U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102419341A (en) * | 2011-12-06 | 2012-04-18 | 中南大学 | Thermal deformation tester for cement-emulsified asphalt mortar material |
| CN103063699A (en) * | 2012-12-13 | 2013-04-24 | 中国科学院理化技术研究所 | Material low-temperature thermal expansion coefficient testing device using refrigerator as cold source |
| CN103439355A (en) * | 2013-08-29 | 2013-12-11 | 南京理工大学 | Tester for coefficient of linear thermal expansion of embedded material |
| CN103994707A (en) * | 2014-05-09 | 2014-08-20 | 青岛德固特节能装备股份有限公司 | Method for measuring relative thermal expansion elongation amount of air preheater heat exchange tube |
| CN107063169A (en) * | 2017-06-16 | 2017-08-18 | 哈尔滨工业大学 | A kind of method of size changing amount under the conditions of quantitative assessment metal material cold cycling |
| CN109187620A (en) * | 2018-09-19 | 2019-01-11 | 江门市建联检测有限公司 | A kind of plastic tube vicat softening temperature testing equipment |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120822 Termination date: 20131206 |